mandi l. walkley , 39 , and jacob m. austin , 52 , had been in the dungeness bay for one to two hours before the coast guard could rescue them .
they both passed away from their injuries after being hospitalized .
william d. kelley , 50 , was also rescued by the coast guard and has improved from critical to serious condition .
weather was predicted to be stormy on saturday and an advisory had been issued on friday , according to the sheriff 's office .
but friend dennis caines , who was kayaking with the group , said the weather had been calm earlier that day .